.head{
    background-color: rgb(1, 17, 53);
    width: 100%;
    overflow: hidden;
    border-radius: 0px 0px 9px 10px; 
}
.left{
    float: left;
    color: rgb(19, 148, 222);
    font-size: 13px;
    padding: 10px;
    
}
.left:hover{
    color: black;
    background-color: rgb(26, 100, 169);
    text-decoration: underline;
}
.right{
    float: right;
    color: gray;
    font-size: 13px;
    padding: 10px;
}
.right:hover{
    color: black;
    background-color: rgb(26, 100, 169);
    text-decoration: underline;
}

.all{
    width: 380px;
    height: 450px;
    margin: auto;
    margin-right: 450px;
    border-radius: 25px;
    background-color: rgba(0, 0, 0, 0.1);
    text-align: center;
    backdrop-filter: blur(15px);     /*模糊*/

}
/* .all2{
    width: 380px;
    height: 450px;
    margin: auto;
    border-radius: 25px;
    background-color: rgba(0, 0, 0, 0.1);
    text-align: center;
} */
.x{
    float: left;
    padding-left: 50px;
    padding-bottom: 10px;
}

.x:hover{
    transform: scale(1.1);
}
.y{
    float: right;
    padding-right: 50px;
}
.y:hover{
    transform: scale(1.1);
}
button{
    width: 280px;
    height: 30px;
    margin: 15px;
    border-radius: 5px;     /*圆角矩形*/
    border: 1px solid rgb(0, 0, 0);
    padding: 5px;
    color: white;
    background-color: rgb(26, 100, 169);
    
}
input{
    margin-top: 20px;
    margin-bottom: 15px;
    margin-left: 0px;
    width: 280px;
    height: 40px;
    border: none;       /*无边框*/
    outline: none;      /*选中时无边框*/
    background-color: white;
}

button:hover{
    background-color: rgb(74, 122, 224);
    transform: scale(1.1);
}

a{
    font-size: 13px;
}

.photo{
    position: relative;
    top: 16px;
    left: 5px;
    height: 41px;
}
.photo:hover{
    transform: scale(1.1);
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.1);
}

.under {
    padding-top: 10%;
    text-align: center;
}
.under span {
    font-size: 11px;
    color: white;
}
body { 
    background: url(https://i.alipayobjects.com/e/201311/1V4nsyvMbt_src.jpg) no-repeat; /*不重复*/
    background-size: cover;
    height: 950px;
}
a {
    color: white;
}